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Cirrus Dental Group was founded in 2016 by Dr. David Hart who has practiced in Great Bend for over 12 years. In 2015, Dr. Hart was able to realize his childhood dream, as well as his late father's life long dream, of becoming a pilot. This resulted in the purchase of his first aircraft, a used Cirrus SR22. The ability to utilize the airplane for travel with staff allowed Dr. Hart to expand and offer dental services to the extremely underserved population of Southwest Kansas, Southeast Colorado, and the panhandle of Oklahoma for over 6 years. Dr. Hart's late mother suffered from undiagnosed severe sleep apnea. This led Dr. Hart and the staff to become educated and add the treatment of sleep apnea via oral appliance therapy to the practice. In March 2022 Dr. Hart was appointed an assistant professor at the University of Kentucky College of Dentistry. He instructs there one week out of each month.

Our team is dedicated to help make your dental experience and expectation possible!

Our Story

Meet Our Team
David Hart, DDS


Level 2 sedation permit

Assistant dental professor

ashleyleu pic_edited_edited.jpg
Ashley Leu, RDH

Dental Hygienist

Debbie Marshall

Dental Assistant 

Ashley Stroup

Chief Operating Officer

Becca Demel, RDH

Dental Hygienist

Gladis Arellanes, RDH

Dental Hygienist

Kylie Pfister

Dental Assistant

Supragingival Scaling Certified

Sue Brough

Front Desk Receptionist 

Office News:

Welcome to the office:

We are happy to welcome Dr. Justin Sperlein to join our practice in the middle of June 2024. 


Dr. Sperlein is a graduate of the University of Kentucky College of Dentistry, where he met Dr. Hart. He has a varied background, as he spent a first career in the technology industry, and brings that love of technology to dentistry. He has a BA and MA in Linguistics (BYU and UGA respectively) and a DMD from the University of Kentucky. he is always learning new skills and has a special interest in restorative dentistry, prosthodontics, and implant dentistry.


Dr Sperlein and his wife have three children, each born in a different state. They are active in their church, and enjoy family time with their kids and corgi, Cricket. For relaxation Dr. Sperlein enjoys hand-tool woodworking an ha a particular love for antique saws.

University of Kentucky:

Dr. Hart recently became an assistant professor at the University of Kentucky College of Dentistry. He will travel there one week out of each month to help teach and mentor dental students. Go Cats!

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